The New Sudoku Players' Forum

[ArkieTech]

Code: Select all

 *-----------*
 |26.|...|...|
 |3.7|2..|...|
 |1..|...|74.|
 |---+---+---|
 |.16|7.2|3..|
 |8..|...|...|
 |.3.|..9|5..|
 |---+---+---|
 |...|.9.|.27|
 |...|..3|...|
 |..4|.1.|...|
 *-----------*

26.......3.72.....1.....74..167.23..8.........3...95......9..27.....3.....4.1....



Play/Print this puzzle online

[SpAce]

Code: Select all

.-----------------.--------------------.------------------.
| 2     6     59* | 1459   7      145  | 8   135*   135*  |
| 3     4     7   | 2      8-5    158  | 69  1569*  1569* |
| 1     59    8   | 3569   356    56   | 7   4      2     |
:-----------------+--------------------+------------------:
| 459   1     6   | 7      458*   2    | 3   89     489   |
| 8     579   59* | 1356*  3456*  156* | 2   1679   1469  |
| 47    3     2   | 168    468    9    | 5   1678   1468  |
:-----------------+--------------------+------------------:
| 56    58    3   | 4568   9      4568 | 1   2      7     |
| 5679  5789  1   | 568    2      3    | 4   5689   5689  |
| 569   2     4   | 568    1      7    | 69  35689  35689 |
'-----------------'--------------------'------------------'

Extended Grouped Turbot Crane (ER-C-EL)

(5)C3B35\r15[r2c5] => -5 r2c5

[Ngisa]

Code: Select all

+---------------------+----------------------+----------------------+
| 2       6       c59 | 1459    7       145  | 8     135      135   |
| 3       4        7  | 2       8-5     158  | 69    1569     1569  |
| 1      b59       8  |a3569   a356    a56   | 7     4        2     |
+---------------------+----------------------+----------------------+
| 459     1        6  | 7      f458     2    | 3     89       489   |
| 8       579     d59 |e1356   e3456   e156  | 2     1679     1469  |
| 47      3        2  | 168     468     9    | 5     1678     1468  |
+---------------------+----------------------+----------------------+
| 56      58       3  | 4568    9       4568 | 1     2        7     |
| 5679    5789     1  | 568     2       3    | 4     5689     5689  |
| 569     2        4  | 568     1       7    | 69    35689    35689 |
+---------------------+----------------------+----------------------+


(5)r3c456 = r3c2 - r1c3 = r5c3 - r5c456 = r4c5 => - 5r2c5; stte

Clement

[SpAce]

(5)r3c456 = r3c2 - r1c3 = r5c3 - r5c456 = r4c5 => - 5r2c5; stte

I like that! I have no idea what to even call it. Grouped Kite+ER? If you used the simple strong link on row 4 instead of the ER in box 5, it could be called Grouped 3-String Kite.

[tarek]

Finally the sukaku explaine is useful.

So this one is a 3-Turbot Crane (with 2 grouped strong links) … I love it because of the use of box 3 which is not an ER (I referred to it is EmL c/d)

There are 5 possible strong links which lead to the same elimination. Well done for spotting it

tarek

[Ngisa]

(5)r3c456 = r3c2 - r1c3 = r5c3 - r5c456 = r4c5 => - 5r2c5; stte

I like that! I have no idea what to even call it. Grouped Kite+ER? If you used the simple strong link on row 4 instead of the ER in box 5, it could be called Grouped 3-String Kite.

Thanks.

[tarek]

The one to add is the grouped strong link in box 7 (which complements the strong link in c3) that could link the strong links in r34 achieving the same elimination

(5)r3c456 = r3c2 - r1c3 = r5c3 - r5c456 = r4c5 => - 5r2c5; stte

I like that! I have no idea what to even call it. Grouped Kite+ER? If you used the simple strong link on row 4 instead of the ER in box 5, it could be called Grouped 3-String Kite.

The way Sukaku explainer displays it: The arrow display actually is a 3 string kite and has the more striking display out the 5 options

[SpAce]

Hi tarek,

Finally the sukaku explaine is useful.

So this one is a 3-Turbot Crane (with 2 grouped strong links) … I love it because of the use of box 3 which is not an ER (I referred to it is EmL c/d)

Good of you to chime in! I thought you might be interested in this one. I don't know if it's intentional or pure luck, but Dan seems to have a knack for producing puzzles that have relevance to on-going or recent discussions!

The one to add is the grouped strong link in box 7 (which complements the strong link in c3) that could link the strong links in r34 achieving the same elimination

Indeed. Here's a funny one that uses five box-based strong links (3 x EmR + 2 x EmL; four of them grouped):

Code: Select all

.-------------------.--------------------.------------------.
| 2      6      59* | 1459   7      145  | 8   135*   135*  |
| 3      4      7   | 2      8-5    158  | 69  1569*  1569* |
| 1      59*    8   | 3569   356    56   | 7   4      2     |
:-------------------+--------------------+------------------:
| 459*   1      6   | 7      458*   2    | 3   89     489   |
| 8      579*   59* | 1356*  3456*  156* | 2   1679   1469  |
| 47     3      2   | 168    468    9    | 5   1678   1468  |
:-------------------+--------------------+------------------:
| 56*    58*    3   | 4568   9      4568 | 1   2      7     |
| 5679*  5789*  1   | 568    2      3    | 4   5689   5689  |
| 569*   2      4   | 568    1      7    | 69  35689  35689 |
'-------------------'--------------------'------------------'

(5)B13457\r15c12[r2c5] => -5 r2c5

(5)r2c89 = r1c89 - r1c3 = r3c2 - r78c2 = r789c1 - r4c1 = r5c23 - r5c456 = (5)r4c5 => -5 r2c5

--

Just for fun, here's also a ridiculous Leviathan (found by Hodoku) that uses almost every candidate of 5 there is:

Code: Select all

.-------------------.--------------------.--------------------.
| 2      6      59* | 1459*  7     145*  | 8   135*    135*   |
| 3      4      7   | 2      8-5   158*  | 69  1569*   1569*  |
| 1      59*    8   | 3569*  356   56*   | 7   4       2      |
:-------------------+--------------------+--------------------:
| 459*   1      6   | 7      458   2     | 3   89      489    |
| 8      579*   59* | 1356*  3456  156*  | 2   1679    1469   |
| 47     3      2   | 168    468   9     | 5   1678    1468   |
:-------------------+--------------------+--------------------:
| 56*    58*    3   | 4568*  9     4568* | 1   2       7      |
| 5679*  5789*  1   | 568*   2     3     | 4   5689*   5689*  |
| 569*   2      4   | 568*   1     7     | 69  35689*  35689* |
'-------------------'--------------------'--------------------'

(5)C4689B147\r15c12b89[r2b2] => -5 r2c5

[tarek]

I don't know if it's intentional or pure luck, but Dan seems to have a knack for producing puzzles that have relevance to on-going or recent discussions!

Amazing coincidence! Or is it

[pjb]

Code: Select all

 2       6       59     | 1459   7      145    | 8      135    135   
 3       4       7      | 2      8-5    158    | 69     1569   1569   
 1      *59      8      |f3569  *356   f56     | 7      4      2     
------------------------+----------------------+---------------------
*459     1       6      | 7     *458    2      | 3      89     489   
 8       579     59     | 1356   3456   156    | 2      1679   1469   
 47      3       2      | 168    468    9      | 5      1678   1468   
------------------------+----------------------+---------------------
*56     *58      3      | 4568   9      4568   | 1      2      7     
*5679   *5789    1      | 568    2      3      | 4      5689   5689   
*569     2       4      | 568    1      7      | 69     35689  35689 


Another similar solution: Finned Franken swordfish of 5s (r43b7\c125), fin at r3c46, eliminating 5 from r2c5

Phil